It is the years we spent together at college ________ have a deep effect on my life.
It was not long _____ he was born that his mother died of illness.
Most of the audience wondered what idea a man who is deaf from birth can have _____ music.
It is ten years _____ I lived in Nanjing, so I know ____ about what it is like today.
Safety in school has been of great concern because of the frequent reports ____ students got injured or killed while in school.
I got the job I _______ for. The boss picked me out of 30 applicants.